Application of a New Fault Detection Approach to Aerocraft's Closed-Loop Control System

摘要

The main contributions of this paper is the successful application in the aerocraft's closed-loop control system. As we know, the fault detection approaches proposed before mainly aim at the open-loop system. Meanwhile, a new LMI (linear matrix inequality)-based filter design methodology for fault detection in LTI plants is presented. For fault detection, H_∞ and H- index are used to measure the residual's robustness against disturbances and sensitivity to faults respectively. In this paper, the H- index is transformed to H_ ∞norm by using the residual error instead of residual. Eventually, the design scheme is applied in an aerocraft's longitudinal closed-loop system and the advantages of this approach are highlighted.